That sounds bad. Paying users don't want huge and every-growing numbers of freeloaders reducing the return for each dollar they spend...

That would only lead to further and further degradation of service until the paying customers were absolutely desperate to find a deal that didn't require them to lug around such a heavy ball and chain.

It all made sense at the beginning when Github was free for OSS and OSS was thriving, but now these billions of commits are mostly incredibly low value. I'd bet the average commit now doesn't create 1/10th of the value the average commit did in, say, 2018